Newbie Question: in Blender 2.8 Adding Armature options missing?
You need to enable Rigify to see them.


Click on "Edit" -> "Preferences..."
In the new window, click on "Add-ons"
In the search bar at the top right, type in 'rig'
You should now see "Rigging: Rigify"
Click the checkbox next to it and close the window; now you should see those extra options


Note: I ran into the same problem; this solution was based on help from the Gabbitt 3D Discord channel.